Superior efficiency hydrogen peroxide production in acidic media through epoxy group adjacent to Co-O/C active centers on carbon black

Yuan, Jili; Yin, Hao; Ge, Xin; Pan, Ronglan; Huang, Caijuan; Chen, Dechao; Hu, Lin; Xie, Haibo

doi:10.1016/j.cej.2023.142691

Cited by 8 publications

(5 citation statements)

References 63 publications

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“…In addition to N-doping, the adsorption and catalytic properties of C-SACs for intermediate species *OOH can also be adjusted by heteroatom doping such as O, S, P, B, etc. [53][54][55]. Tang et al reported the structure-property relationship of C-SACs catalysts via ORR in the acidic condition, for the first time showing that the molecular-level local structure synergistically affects the electrocatalytic performance [53].…”

Section: Effect Of Heteroatom Coordinationmentioning

confidence: 99%

“…The as-designed CoNOC exhibits highly significant activity approaching the onset potential of ~0.57 V vs. RHE, selectivity of >95%, and 11 h stability for H 2 O 2 synthesis in acidic media (Figure 4a). Similarly, Yuan et al report that the activated commercial CB was used to anchor a single transition metal catalyst with first and second coordination sites [54]. As a result, Co-SACs exhibit extraordinary performance for ORR to produce H 2 O 2 , where a current density of around ~2.8 mA cm −2 at 0.1 V vs. RHE in rotating ring-disk electrodes and a high yield rate of 110.2 mmol g metal −1 h −1 at the potential of 0.3 V vs. RHE in a gas-diffusion-electrode (GDE) cell, with a high positive onset potential of 0.65 V vs. RHE and a >80% selectivity of H 2 O 2 at the potential range from 0.25 to 0.65 V vs. RHE, respectively.…”

Section: Effect Of Heteroatom Coordinationmentioning

confidence: 99%

Section: Effect Of Heteroatom Coordinationmentioning

confidence: 99%

“…[53][54][55].Tang et al reported the structure-property relationship of C-SACs catalysts via ORR in the acidic condition, for the first time showing that the molecular-level local structure synergistically affects the electrocatalytic performance [53]. The ORR selectivity of Co-SACs in commercial carbon black (CB) can be tailored from a 4e − to a 2e − pathway by changing the first (N or/and O coordination) and second (C-O-C groups) coordination spheres.…”

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confidence: 99%

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Recent Advances in Carbon-Based Single-Atom Catalysts for Electrochemical Oxygen Reduction to Hydrogen Peroxide in Acidic Media

Yin,

Pan,

Zou

et al. 2024

Nanomaterials

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Electrochemical oxygen reduction reaction (ORR) via the 2e− pathway in an acidic media shows great techno-economic potential for the production of hydrogen peroxide. Currently, carbon-based single-atom catalysts (C-SACs) have attracted extensive attention due to their tunable electronic structures, low cost, and sufficient stability in acidic media. This review summarizes recent advances in metal centers and their coordination environment in C-SACs for 2e−-ORR. Firstly, the reaction mechanism of 2e−-ORR on the active sites of C-SACs is systematically presented. Secondly, the structural regulation strategies for the active sites of 2e−-ORR are further summarized, including the metal active center, its species and configurations of nitrogen coordination or heteroatom coordination, and their near functional groups or substitute groups, which would provide available and proper ideas for developing superior acidic 2e−-ORR electrocatalysts of C-SACs. Finally, we propose the current challenges and future opportunities regarding the acidic 2e−-ORR pathway on C-SACs, which will eventually accelerate the development of the distributed H2O2 electrosynthesis process.

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Section: Effect Of Heteroatom Coordinationmentioning

confidence: 99%

Section: Effect Of Heteroatom Coordinationmentioning

confidence: 99%

Section: Effect Of Heteroatom Coordinationmentioning

confidence: 99%

mentioning

confidence: 99%

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Recent Advances in Carbon-Based Single-Atom Catalysts for Electrochemical Oxygen Reduction to Hydrogen Peroxide in Acidic Media

Yin,

Pan,

Zou

et al. 2024

Nanomaterials

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“…These membranes offer flexibility in terms of their application, allowing researchers to explore various experimental setups and conditions to achieve efficient CO 2 reduction [64][65][66]. Moreover, their versatility extends beyond CO 2 reduction to encompass other electrochemical processes such as electrodialysis, desalination, reverse electrodialysis, and acid recovery [67][68][69][70]. The FAA series has been readily accessible in the market for a substantial period, offering researchers and industry professionals a dependable and commercially viable solution for these specific applications.…”

Section: Fumatech: Faa Seriesmentioning

confidence: 99%

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Wong

Rosli

et al. 2023

Separations

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The utilization of anion exchange membranes (AEMs) has revolutionized the field of electrochemical applications, particularly in water electrolysis and fuel cells. This review paper provides a comprehensive analysis of recent studies conducted on various commercial AEMs, including FAA3-50, Sustainion, Aemion™, XION Composite, and PiperION™ membranes, with a focus on their performance and durability in AEM water electrolysis (AEMWE) and AEM fuel cells (AEMFCs). The discussed studies highlight the exceptional potential of these membranes in achieving high current densities, stable operation, and extended durability. Furthermore, the integration of innovative catalysts, such as nitrogen-doped graphene and Raney nickel, has demonstrated significant improvements in performance. Additionally, the exploration of PGM-free catalysts, such as Ag/C, for AEMFC cathodes has unveiled promising prospects for cost-effective and sustainable fuel cell systems. Future research directions are identified, encompassing the optimization of membrane properties, investigation of alternative catalyst materials, and assessment of performance under diverse operating conditions. The findings underscore the versatility and suitability of these commercial AEMs in water electrolysis and fuel cell applications, paving the way for the advancement of efficient and environmentally benign energy technologies. This review paper serves as a valuable resource for researchers, engineers, and industry professionals seeking to enhance the performance and durability of AEMs in various electrochemical applications.

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Effects of Carbon Black Surface Modification on the Morphology and Properties in Blends with Natural Rubber Studied with High‐Resolution X‐Ray Computed Tomography

Wang,

Jiang,

Zhu

et al. 2024

Macro Materials & Eng

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To elucidate the specific mechanical impact of carbon black (CB) filler–rubber interactions on reinforcement, CB particles are subjected to graphitization at 1300 °C and oxidation through concentrated nitric acid treatment to modulate their surface activity. Alongside untreated CB particles, the influence of surface activity and the oxygen distribution are investigated to assess their role in shaping CB aggregate structures using X‐ray absorption spectrum (XAS) and X‐ray computed tomography (CT) with spatial resolution of 30 nm. Meanwhile, virgin and modified CBs are blended in natural rubber with varying amounts (10, 30, 50 phr) and the aggregates distributions in rubber are investigated by nano‐CT. Combined with the mechanical properties of rubber composites and parameters of filler networks, the mechanical contributions arising from filler–rubber interactions are quantified. The findings underscore the robust interactions between oxidized CB and rubber matrix, exhibiting a mechanical property enhancement ratio of ≈59.2% at low strains in comparison to normal CB filler. The results indicate the synergies encompass of filler network, rubber chains, and filler–rubber interactions all play important roles for reinforcement, which aligns with the broader understanding of filler–rubber interactions and CB reinforcement mechanisms.

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Superior efficiency hydrogen peroxide production in acidic media through epoxy group adjacent to Co-O/C active centers on carbon black

Cited by 8 publications

References 63 publications

Recent Advances in Carbon-Based Single-Atom Catalysts for Electrochemical Oxygen Reduction to Hydrogen Peroxide in Acidic Media

Recent Advances in Carbon-Based Single-Atom Catalysts for Electrochemical Oxygen Reduction to Hydrogen Peroxide in Acidic Media

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Effects of Carbon Black Surface Modification on the Morphology and Properties in Blends with Natural Rubber Studied with High‐Resolution X‐Ray Computed Tomography

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